Which type of checkpoint allows vehicles to be stopped without RAS or PC?

DUI checkpoints are designed as proactive measures to ensure public safety by identifying and deterring impaired drivers. These checkpoints allow law enforcement officers to stop vehicles without the need for reasonable suspicion (RAS) or probable cause (PC). The legal justification for this practice comes from the balancing of public interest in reducing drunk driving incidents against the minimal intrusion posed by the brief stops at checkpoints.

Court rulings have upheld these types of checkpoints, establishing that the governmental interest in preventing harm due to impaired driving outweighs the minor inconvenience to drivers. This means that at DUI checkpoints, officers can stop vehicles based solely on their presence at the designated checkpoint, rather than needing specific cause for each individual stop.

In contrast, other types of checkpoints, like speed monitoring and traffic light inspections, generally require some reasonable suspicion to lawfully stop a vehicle because they do not focus on a specific public safety concern in the way that DUI checkpoints do.